The insides of a seed carry the huge variety of genes necessary to make
an oak tree or a prickly pear — or a marigold or lettuce. Here are some
more extremes that seeds can go to.

Giant Seed

The coconut is a pretty big seed. If you live where the temperature is
usually 80 degrees or warmer and doesn't fall below 70 (USDA Zone 10 or
south), you can plant a ripe coconut and grow a palm tree.